Kentucky Bluegrass Research Paper

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5. You encounter a lawn with several bluegrass (Kentucky, rough, annual) species present. What are the distinguishing features that would enable you to correctly identify each of these species? Based on the environmental conditions to which they are each best adapted, what environmental modifications might you make to specifically favor the Kentucky bluegrass? And, based on their respective cultural requirements, what cultural operations might you perform to specifically favor the Kentucky bluegrass? There are a few things to look for when distinguishing between Kentucky, rough, and annual blue grass. The ligules of Kentucky blue grass are very short. Only .2 to .6 mm long and truncate. The ligules of rough blue grass are much longer, 2-6 …show more content…

Kentucky blue grass has a V shaped or flat blade. The sides are parallel and the blade is smooth on both surfaces. There are 2 light lines astride the central vein and the tip is boat shaped. Rough blue grass has a flat blade 1-4 mm wide. The blade slightly tapers to a boat shaped tip. Both sides are smooth with a glossy abaxial surface. Light lines are not prominent and there is an onion skin appearance to the sheath base. Annual blue grass blades can be flat or V shaped and 2-3 mm wide. Parrellel sided or slightly tapering to a boat shaped tip and smooth on both sides. The blades are light green at both ends of the growing season and in winter. There are multiple light lines parallel to veins. It should be easy to distinguish between rough and annual blue grass by the lack of prominent light lines and glossy abaxial surface of rough blue grass and the multiple light lines and light green appearance of annual blue grass. The inflorescence also varies between the three. Kentucky blue grass has an open pyramid shaped panicle. Rough blue grass has an open panicle. Annual blue grass has a small open panicle and seeds are present through most of the season and are most abundant during early to

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